Refurbs just tried the rotafix method for loosening a track cog. I haven't had occasion to try the technique before, but yesterday I discovered its virtues. I was struggeling with a Miche track cog adapter that seemed to cling to the hub for its life. First I wrecked my admittedly flimsy chain whip, which had been enhanced with a 1 m steel pipe, and in the process I managed to cut out a chunk of skin from a knuckle that rubbed against a spoke as the whip gave in. Ouch. Then I tried backpedaling hard against a wall, but to no avail. Next option: violence. A hammer and a large screwdriver provided no result.
Then I thought of the rotafix method. I took an old frame and did as described in the link above, only with the chain wrapped around the bottom of the cog. I pulled the wheel firmly, and the adapter rolled off the threads with almost no resistance!
I liberated two other very tight cogs in the same way without any problems whatsoever.
Bye bye chain whip and bruised knuckles. And farewell to Miche adapters.
Posts
